Compared with ordinary extruded boards, graphite extruded boards have the advantages of lower thermal conductivity, higher compressive strength, and better flame retardant effect, making them particularly suitable for thermal insulation of cold storage floors. The thermal conductivity of the graphite extruded board produced by our company is as low as 0.024, and the compressive strength can reach up to 800 kPa, which can meet the insulation needs of three-dimensional cold storage.